BEARING POINTERS
82005-PG-D
SANDEL SN3500 EHSI PILOT’S GUIDE
PAGE
5-1
CHAPTER 5 BEARING POINTERS
Bearing Pointers
The SN3500 provides two independent bearing pointers which
function in much the same way as a traditional radio magnetic
indicator (RMI). The head of each bearing pointer indicates the
bearing to the NAV source. The tail of each pointer indicates the
bearing from the NAV source. Either pointer can be driven by any
navigation source interfaced to the SN3500: VOR, GPS/FMS, or
ADF. When a GPS/FMS is selected as the bearing pointer source,
the bearing pointer indicates the bearing and distance to the current
active waypoint.
To display the bearings pointers, press [BRG] repeatedly to cycle
through displaying bearing pointer 1 only, displaying bearing 2 only,
displaying both bearing pointers 1 & 2 and disabling both bearing
pointers.
The color of each bearing pointer, and its associated numeric
display, follow the color-coding when on-side:
ADF:
Magenta
GPS:
Cyan
VOR: Green (NAV1), Yellow (NAV2)
The cross-side color of the bearing pointer, and its associated
numeric display, is yellow when NAV1 is selected and green when
NAV2 is selected.
The digital numeric bearing to the navigation source of the bearing
pointer is displayed at the bottom of the screen. When the data is
invalid, “---“ is displayed and the associated bearing pointer is
removed from the screen. The selected bearing pointer name is
displayed above the numeric bearing display.
Note. Certain ADF receivers may not supply an “invalid” signal. In
these cases, the receiver will “park” the needle, usually 90
°
to the
right of the lubber line, when no signal is being received. See the
Pilot’s Guide for your navigation receiver to determine its capability
during “No-signal” operation.
BEARING POINTERS
82005-PG-D
SANDEL SN3500 EHSI PILOT’S GUIDE
PAGE
5-2
BRG Menu
The NAV sources for the bearing pointers are selected using the
BRG menu function.
Figure 5-1 BRG main menu
•
Press [M] to activate menu mode.
•
Press [BRG] to display the BRG menu
•
Rotate the left knob to select BRG1 or BRG2 in the left
column.
•
Rotate the right knob to select the desired option.
•
Press [M] to exit the menu and return to normal operation.
